They both have ornamental balls
A pineapple !
A Krismas goose.
Thought of this one on my own while playing WoW a couple days ago and I'm pretty sure it hasn't been told before. I like corny jokes. I Googled it and didn't find anything (:
A friar? A chip monk?
A Giving Christmas Tree
A Porky-Pine
They both have ornamental balls.